An f40 file extension is related to the FORTRAN-4 compiler for PDP-10 mainframe computers. An f40 file stores FORTRAN source code.

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F40 file extension - PDP-10 FORTRAN-4 compiler source

What is f40 file? How to open f40 files?

File type specification:

Source code and script file type icon Source code and script file type

The f40 file extension is related to the PDP-10 Fortran-4. The f40 file contains compiler source.

The PDP-10 was a mainframe computer manufactured by Digital Equipment Corporation (DEC) from the late 1960s

Fortran is a general-purpose, procedural, imperative programming language that is especially suited to numeric computation and scientific computing.

This f40 file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .f40 file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

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